class ContractManagement:
    def upload(self):
        """
        上传合同
        :return:
        """
        pass

    def add(self):
        """
        添加合同
        :return:
        """
        pass

    def queryList(self):
        """
        查询合同列表
        :return:
        """
        pass

    def delete(self):
        """
        删除课程
        :return:
        """